git-verify-pack.txt: fix inconsistent spelling of "packfile"

Signed-off-by: Patrick Steinhardt <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: pks-t

Documentation/git-verify-pack.txt

@@ -40,7 +40,7 @@ OUTPUT FORMAT
 -------------
 When specifying the -v option the format used is:
 
-	SHA-1 type size size-in-pack-file offset-in-packfile
+	SHA-1 type size size-in-packfile offset-in-packfile
 
 for objects that are not deltified in the pack, and